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j UNrrEin STATES sAMUEL E. CAMl PATinxiT OFFICE.

To EDwAED MICHAEL, or ls'AME PLAGE.

DOOR-secuelas.

SPECIFICATION forming part of Letters Patent No.377,927, dated-February 14, 1.888.

Application filed February 28, 1887. Serial No. 229,168. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL R. CAMPBELL, of the city of Buffalo, in the county of Erie and State of New York, have .invented a new and useful Improvement in Door-Fasteners, of which the following is a specification.

- This invention relates to that class of doorfasteners which are inserted under the lower edge of the door for preventing the door from being opened, except, possibly, by applying considerable force, which would be liable to arouse the person occupying the room.

The object of my invention is the construe tion of a simple and convenient door-fastener, which will hold the door securely and which can be produced at small expense.

My invention consists of the improvements which will be hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view showing my improved doorfastener in position for securing a door. Fig. 2 is aseetional elevation'showing my improved door-fastener in the same position. Fig. 3 is a rear elevation of the fastener. Fig. 4 is a top plan view thereof. Fig. 5 is a rear elevation of the fastener, showing the same in position ready to be inserted under the door.

Likeletters of reference refer to like parts in,

the several gures.

A represents a tapering or wedge-shaped block or plate provided, preferably -in both .of its edges, with serrations or teeth a, which are adapted to embed themselves into the adjacent wooden parts. This block or plate is made of such size and form as to enter 'under the lower edge of doors of usual construction.

B represents a transverse bar or lever, which is movably connected withv the plate A, near the rear or butt end thereof, and by which the plate can be turned after it has been inserted under the door. The bar B passes loosely through an opening, b, in the plate A, and is provided at its ends with heads which prevent it from becoming detached from the plate A. The bar B is provided at one end with a bent portion or knee, e, which permits lthe bar to be laid closely against the plate A, as represented in Fig. 4, when the device isnot re- E'ELL, or BUFFALO, NEwYoEx, AssieNoE OEONEHALE- 1 D represents pivoted detent-pawl, which is hung to the .rear end of the plate A, and which assists in preventing the plate'from being moved on the .floor or other surface on' which it rests. The detent D is preferably made U shaped, and has its arms dd arranged on both sides of the plate A, the horizontal bar d of the detent being journaledin an opening formed in the plate A near the rear end thereof. Each of the arms d of the detent is preferably provided with duplex points eprojecting in opposite directions, so that the detent can be reversed, if desired.

When the device is to be inserted-under a door, the plate A is laid dat upon the oor, or nearly so, as represented in Fig. 5, and inserted under the door in this position. then turned up into a vertical position by means of the lever B. Thiscauses the teeth a a ofthe plate to embed themselves into the lower edge of the door'and into the' floor or threshold, as indicated in Fig. 2. The detent The plate is D is then arranged to resist the movement of the plate A in the direction in which the door is required to be swung for opening the same.` The plate A, when firmly engaged with the adjacent Wooden parts, prevents the doorfrom vmoving in either direction, although it offers the greater resistance to a force which tends tomove the door upwardly on the inclined edge-of the plate.

When the plate is in posi-l tion under the door, the bar orY lever B rests y with one end on theloor and prevents the plate from being turned over. When it is desired to withdraw the plate, it is turned down .v

by means of the lever BA to theposition repre# sented in Fig. 5.

My improved fastener is very simple in construction, convenient in use, and can be produced at small expense.

I claim as my inventiony 1. In a door-fastener, the combination, with the tapering plate or block A, of a detent, D, hung to said plate or block, substantially as set forth. Y

2. In a door-fastener, the combination, with the tapering plate or block A, of a reversibley detent, D, hung to said plate or block and provided with duplex points, substantially as set forth.

3. In a door -fastener, the combination, with the tapering plate or block A, of a transverse bar or lever, B, and a detent, D, hung to said plate, sustantially as set forth.

4. In a door-fastener, the combination, with the tapering serrated plate or block A, provided with an opening, Z, of a transverse har or lever, B, inserted loosely through said opening and provided at its ends with heads which ro prevent the withdrawal of the lever from the opening b, and with a bent knee, c, at one end ywhich permits the bar to be laid closely against the plate, substantiallyas set forth.

Witness my hand this 29th day of January, 1887.

SAMUEL R. CAMPBELL.

Vi tnesses CARL F. GEYER, JNO. J. BONNER. 

